Accessories for oscillating power tools

Patent metadata

Field	Value
Publication number	US-11919100-B2
Application number	US-202117179831-A
Country	US
Kind code	B2
Filing date	Feb 19, 2021
Priority date	Feb 25, 2020
Publication date	Mar 5, 2024
Grant date	Mar 5, 2024

Abstract

An accessory for an oscillating power tool includes an attachment portion configured to be coupled to an oscillating power tool and a working portion extending generally along a longitudinal axis. The working portion has a rear end portion coupled to the attachment portion, a front cutting edge opposite the rear end portion, a first side edge extending from the front cutting edge to the rear end portion, and a second side edge opposite the first side edge and extending from the front cutting edge to the rear end portion. The working portion includes an at least partially curved surface that contains the longitudinal axis. At least a portion of the first side edge includes a first side cutting edge portion.

First claim

What is claimed is:

1. An oscillating accessory comprising:
an attachment portion configured to be coupled to an oscillating power tool to oscillate about an oscillating axis;
an inclined portion integrally attached to the attachment portion at an angle to the attachment portion; and
a working portion extending generally along a longitudinal axis that is transverse to the oscillating axis, the working portion having a rear end portion integrally attached to the inclined portion, a front cutting edge opposite the rear end portion, a first side edge extending from the front cutting edge to the rear end portion, and a second side edge opposite the first side edge and extending from the front cutting edge to the rear end portion, the working portion including an at least partially curved surface that contains and is curved along the longitudinal axis and along substantially an entire length of the working portion from the rear end portion to the front cutting edge, at least a portion of the first side edge including a first side cutting edge portion, wherein the working portion is configured to cut a curved opening in a workpiece.

2. The accessory of claim 1 , wherein the second side edge comprises a second side cutting edge portion.

3. The accessory of claim 1 , wherein the attachment portion includes a planar portion that lies generally in a first plane.

4. The accessory of claim 3 , wherein the at least partially curved surface is tangent at the longitudinal axis to a second plane that is generally parallel to the first plane.

5. The accessory of claim 4 , wherein the at least partially curved surface has a concave face that faces away from the attachment portion.

6. The accessory of claim 4 , wherein the at least partially curved surface has a concave face that faces toward the attachment portion.

7. The accessory of claim 1 , wherein the longitudinal axis is parallel to an oscillating axis about which the attachment portion oscillates when the attachment portion is coupled to the oscillating power tool.

8. The accessory of claim 1 , wherein the at least partially curved surface has a radius of curvature.

9. The accessory of claim 8 , wherein the radius of curvature is centered at the oscillating axis.

10. The accessory of claim 8 , wherein the radius of curvature is between approximately 2 inches and approximately 8 inches.

11. The accessory of claim 1 , wherein the front cutting edge has a first plurality teeth and the first side cutting edge portion has a second plurality of teeth.

12. The accessory of claim 1 , wherein a position of the working portion relative to the attachment portion is user adjustable between a rear position and a forward position, the rear position being closer to the attachment portion than the forward position.

13. The accessory of claim 12 , further comprising an intermediate portion coupled between the attachment portion and the working portion, wherein at least one of the intermediate portion, the working portion, and the attachment portion defines a slot therethrough to facilitate the user adjustment of the position of the working portion between the rear position and the forward position.

14. The accessory of claim 13 , further comprising a fastener receivable in the slot and configured to retain the working portion in a plurality of positions between the rear position and the forward position.

15. The accessory of claim 1 , further comprising an intermediate portion disposed between the attachment portion and the working portion, such that the attachment portion is offset from the working portion.

16. The accessory of claim 1 , wherein the at least partially curved surface defines a cord extending from the first side edge to a second side edge.

17. The accessory of claim 16 , wherein the cord has a cord length between approximately 0.70 inches and approximately 2 inches.

18. The accessory of claim 17 , wherein the at least partially curved surface defines a sagitta extending from the longitudinal axis to the cord perpendicular to the cord.

19. The accessory of claim 18 , wherein the sagitta has a length between approximately 0.015 inches and approximately 0.127 inches.

20. The accessory of claim 1 , wherein the front cutting edge has a front curvature that matches a curvature of the at least partially curved surface of the working portion.

Assignees

• Black & Decker Inc
• The Black & Decker Corp

Inventors

• Novak Joseph T
• Howe Kevin
• Hall Kenneth

Classifications

• B27B19/006

  with oscillating saw blades; Hand saws with oscillating saw blades · CPC title

• B23D61/006 Primary

  Oscillating saw blades · CPC title

• A61B17/144

  with cutting edges at the side of the saw blades · CPC title

• A61B17/142

  with reciprocating saw blades, e.g. with cutting edges at the distal end of the saw blades · CPC title